<template>
  <view class="cart-container" v-if="cart.length !==0">
    <view>
       <my-address></my-address>
       <!-- 商品的列表标题区域 -->
       <view class="cart-title">
         <uni-icons type="shop" size="17"></uni-icons>
         <text class="cart-title-text">购物车</text>
       </view>
     </view>
    <!-- 商品列表区域 -->
    <!-- uni-swipe-action 是最外层包裹性质的容器 -->
     <uni-swipe-action> 
       <block v-for="(goods,i) in cart" :key="i">
         <!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
         <uni-swipe-action-item :right-options="options" @click=swipeItemClickHandle(goods)>
           <my-goods :goods="goods" :showRadio="true" @radio-change="radioChangeHandle" :showNum="true" @num-change="numberChangeHandle"></my-goods>
         </uni-swipe-action-item>
       </block>
     </uni-swipe-action>
     <my-settle></my-settle>
  </view>
  
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  // 导入自己封装的 mixin 模块
  
  import bageMix from '@/mixins/tabbar-badge.js'
  import { mapState,mapMutations } from 'vuex'
  
  export default {
    // 将 badgeMix 混入到当前的页面中进行使用
    mixins:[bageMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options:[{
          text:'删除',
          style:{
            backgroundColor: '#C00000'
          }
        }]
      };
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      radioChangeHandle(e){
        this.updateGoodsState(e)
      },
      numberChangeHandle(e){
        this.updateGoodsCount(e)
      },
      swipeItemClickHandle(goods){
        this.removeGoodsById(goods.goods_id)
      }
    }
  
 
  }
</script>

<style lang="scss">
  .cart-container{
    padding-bottom: 50px;
  }
  .cart-title{
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 15px;
    border-bottom: 1px solid #EFEFEF;
    .cart-title-text{
      margin-left: 10px;
    }
  }
  .empty-cart{
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
    .empty-img{
      width: 90px;
      height: 90px;
    }
    .tip-text{
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }

</style>
